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They struck up a friendship that would go far beyond the basketball court.

You were of service to her and I was lucky enough to strike up a friendship with him.

They struck up a friendship immediately because of their common interest in music.

They immediately struck up a friendship, talking about old times in the street.

While there, she strikes up a friendship with his son, Paul.

She struck up a friendship with a woman named Rachel.

They strike up a friendship and quickly fall in love.

They strike up a friendship, and spend some time together after the event.

The two men struck up a friendship and began going to bars together.

Maybe you can strike up a friendship with one or more of them.